A composition of matter comprises a liquid and functionalized nanoparticles suspended in the liquid. At least some of the functionalized nanoparticles comprise nanoparticles of aluminosilica and have a chemical structure of:
##STR00001##
wherein at least one of the X's represents —O— bonded to a silicon (Si) atom or an aluminum (Al) atom of the aluminosilica of at least one of the nanoparticles; each other of the X's represents an additional —O— bonded to another silicon (Si) atom or another aluminum (Al) atom of the aluminosilica of at least one of the nanoparticles, an alkoxy group, an alkyl group, a hydroxyl group (OH), a hydrogen atom, or a halide; Z represents an oxygen (O) atom or an nh group; and Q represents an epoxide group, an aziridine group, a —CH(OH)CH2OH group, a —CH(OH)CH2nh2 group, a —CH(nh)2CH2OH group, or a —CH(nh2)CH2nh2 group. Methods of formation and of use are also disclosed.
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13. A composition of matter, comprising:
a liquid; and
functionalized nanoparticles suspended in the liquid, at least some of the functionalized nanoparticles comprising nanoparticles of aluminosilica and having a chemical structure of:
e####
##STR00025##
wherein:
at least one of the X's represents —O— bonded to a silicon (Si) atom or an aluminum (Al) atom of the aluminosilica of at least one of the nanoparticles;
each other of the X's represents:
an additional —O— bonded to another silicon (Si) atom or another aluminum (Al) atom of the aluminosilica of at least one of the nanoparticles,
an alkoxy group,
an alkyl group,
a hydroxyl group (OH),
a hydrogen atom, or
a halide;
Z represents:
an oxygen (O) atom, or
an nh group; and
Q represents an aziridine group.
1. A composition of matter, comprising:
a liquid; and
functionalized nanoparticles suspended in the liquid, at least some of the functionalized nanoparticles comprising nanoparticles of aluminosilica and having a chemical structure of:
e####
##STR00024##
wherein:
at least one of the X's represents —O— bonded to a silicon (Si) atom or an aluminum (Al) atom of the aluminosilica of at least one of the nanoparticles;
each other of the X's represents:
an additional —O— bonded to another silicon (Si) atom or another aluminum (Al) atom of the aluminosilica of at least one of the nanoparticles,
an alkoxy group,
an alkyl group,
a hydroxyl group (OH),
a hydrogen atom, or
a halide; and
either:
Z represents an oxygen (O) atom, and Q represents:
an aziridine group,
a —CH(OH)CH2OH group,
a —CH(OH)CH2nh2 group,
a —CH(nh2)CH2OH group, or
a —CH(nh2)CH2nh2 group; or
Z represents an nh group, and Q represents:
an epoxide group,
an aziridine group,
a —CH(OH)CH2OH group,
a —CH(OH)CH2nh2 group,
a —CH(nh2)CH2OH group, or
a —CH(nh2)CH2nh2 group.
14. A method for forming a suspension of functionalized nanoparticles, the method comprising:
functionalizing nanoparticles with an organosilicon functional group to form functionalized nanoparticles, the nanoparticles each comprising silica and alumina, the functionalized nanoparticles having a chemical structure of:
e####
##STR00026##
wherein:
at least one of the X's represents —O— bonded to a silicon (Si) atom or an aluminum (Al) atom of at least one of the nanoparticles;
each other of the X's represents:
an additional —O— bonded to another silicon (Si) atom or another aluminum (Al) atom of at least one of the nanoparticles,
an alkoxy group,
an alkyl group,
a hydroxyl group (OH),
a hydrogen atom, or
a halide; and
either:
Z represents an oxygen (O) atom, and Q represents:
an aziridine group,
a —CH(OH)CH2OH group,
a —CH(OH)CH2nh2 group,
a —CH(nh2)CH2OH group, or
a —CH(nh2)CH2nh2 group; or
Z represents an nh group, and Q represents:
an epoxide group,
an aziridine group,
a —CH(OH)CH2OH group,
a —CH(OH)CH2nh2 group,
a —CH(nh2)CH2OH group, or
a —CH(nh2)CH2nh2 group; and
forming a suspension of the functionalized nanoparticles in a liquid.
4. The composition of
6. The composition of
7. The composition of
8. The composition of
at least one of the each other of the X's represents the additional —O— bonded to the another silicon (Si) atom or the another aluminum (Al) atom; and
the silicon (Si) atom or the aluminum (Al) atom represented by the at least one of the X's is of a same nanoparticle, of the at least one of the nanoparticles, as the another silicon (Si) atom or the another aluminum (Al) atom represented by the at least one other of the X's.
9. The composition of
the at least one of the X's represents the —O— bonded to the aluminum (Al) atom of the aluminosilica of the at least one of the nanoparticles; and
at least one of the each other of the X's represents the additional —O— bonded to the another silicon (Si) atom of the aluminosilica of the at least one of the nanoparticles.
10. The composition of
the —CH(OH)CH2OH group,
the —CH(OH)CH2nh2 group,
the —CH(nh2)CH2OH group, or
the —CH(nh2)CH2nh2 group.
11. The composition of
the at least one of the X's represents the —O—bonded to the aluminum (Al) atom of the aluminosilica of the at least one of the nanoparticles; and
the at least some of the functionalized nanoparticles are non-hydrolyzed, wherein the Q represents:
the epoxide group, and the Z represents the nh group, or
the aziridine group, and the Z represents either the oxygen (O) atom or the nh group.
15. The method of
hydrolyzing GLYMO; and
bonding the hydrolyzed GLYMO to the nanoparticles to form the functionalized nanoparticles,
wherein Z represents the oxygen (O) atom and Q represents the —CH(OH)CH2OH group.
16. The method of
bonding GLYMO to the nanoparticles; and
after the bonding, hydrolyzing the GLYMO to form the functionalized nanoparticles,
wherein Z represents the oxygen (O) atom and Q represents the —CH(OH)CH2OH group.
17. The method of
18. The method of
19. The method of
20. A method of using a suspension, comprising:
providing the composition of matter of
injecting the composition of matter into a subterranean well.
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Embodiments of the present disclosure relate generally to suspensions of nanoparticles and methods of forming and using suspensions.
“Nanoparticles,” at least as that term is used herein, are generally defined as particles (e.g., solid particles) having a maximum outer dimension (e.g., an outer diameter) of less than 1 micron. Nanoparticles may be used in a variety of processes within the oil-and-gas industry, such as enhanced oil recovery, clay stabilization, drilling fluids, fracturing fluids, etc. Nanoparticles may also be used for products such as dyes and pigments, coatings, magnetic recording media, quantum dots, and semiconductors.
Nanoparticles may be used to form suspensions or colloids. There are certain challenges in forming and maintaining suspensions of nanoparticles. For example, particles tend to aggregate more quickly in liquids having higher ionic strengths, and aggregates tend to settle from the suspension.
Solid surfaces exposed to a liquid exhibit a structure referred to in the art as an “electrical double layer,” in which two layers of oppositely charged particles (e.g., ions and electrons) cover the surface. In the case of nanoparticles, the layers may surround the nanoparticles. As the size of the nanoparticles decreases, the effect of the charged layers on the nanoparticles' stability in the liquid increases. Furthermore, the size of the electrical double layer decreases as the ionic strength of the liquid increases. A decrease in the electrical double layer corresponds to a decrease in repulsive forces between nanoparticles. Because repulsive forces generally limit the rate of aggregation of nanoparticles, large ionic strengths of the liquid therefore allow attractive van der Waals forces between nanoparticles to dominate their movement, and dispersions of nanoparticles in high-ionic-strength liquids tend to become unstable and form sediment (i.e., larger agglomerations of particles that fall from the suspension). With an increase in temperature, the kinetic energy of suspensions increases, which leads to more frequent and higher-energy particle collisions, which further disrupt the electrical double layer and cause nanoparticles to aggregate.
Colloidal nanoparticle suspension may generally be controlled through charge stabilization, steric stabilization, or a combination of both charge and steric stabilization. Colloidal stability of nanoparticles is important for certain applications in aqueous media containing concentrated electrolytes like biological fluids, sea water, high-brine concentrated injection fluids, etc. Many practical applications in biomedical, environmental, and oil and gas applications use high-ionic-strength liquids. In such applications, nanoparticle stability is crucial.
A composition of matter comprises a liquid and functionalized nanoparticles suspended in the liquid. At least some of the functionalized nanoparticles comprise nanoparticles of aluminosilica and have a chemical structure of:
##STR00002##
wherein at least one of the X's represents —O— bonded to a silicon (Si) atom or an aluminum (Al) atom of the aluminosilica of at least one of the nanoparticles; each other of the X's represents an additional —O— bonded to another silicon (Si) atom or another aluminum (Al) atom of the aluminosilica of at least one of the nanoparticles, an alkoxy group, an alkyl group, a hydroxyl group (OH), a hydrogen atom, or a halide; Z represents an oxygen (O) atom or an NH group; and Q represents an epoxide group, an aziridine group, a —CH(OH)CH2OH group, a —CH(OH)CH2NH2 group, a —CH(NH)2CH2OH group, or a —CH(NH2)CH2NH2 group.
A method for forming a suspension of functionalized nanoparticles comprises functionalizing nanoparticles with an organosilicon functional group to form functionalized nanoparticles. The nanoparticles each comprise silica and alumina. The functionalized nanoparticles have a chemical structure of:
##STR00003##
wherein at least one of the X's represents —O— bonded to a silicon (Si) atom or an aluminum (Al) atom of at least one of the nanoparticles; each other of the X's represents an additional —O— bonded to another silicon (Si) atom or another aluminum (Al) atom of at least one of the nanoparticles, an alkoxy group, an alkyl group, a hydroxyl group (OH), a hydrogen atom, or a halide; Z represents an oxygen (O) atom, or an NH group; and Q represents an epoxide group, an aziridine group, a —CH(OH)CH2OH group, a —CH(OH)CH2NH2 group, a —CH(NH2)CH2OH group, or a —CH(NH2)CH2NH2, group. The method also includes forming a suspension of the functionalized nanoparticles in a liquid.
A method of using a suspension comprises providing the composition of matter discussed above and injecting the composition of matter into a subterranean well.
Compositions and methods, according to embodiments of the disclosure, include silica-and-alumina nanoparticles (i.e., “aluminosilica” nanoparticles, “aluminosilicate” nanoparticles) functionalized with organosilicon functional groups such as (3-glycidyloxypropyl)trimethoxysilane (also known as, and otherwise referred to herein as, “GLYMO”), with organosilicon functional groups derived from GLYMO, or with organosilicon functional groups with structures similar to GLYMO. In some embodiments, these organosilicon functional groups are hydrolyzed and/or have nitrogen (N) substituted for one or more oxygen (O) atoms of the functionalizing compound. The functional groups may chemically bind to silicon (Si) atoms of the silica portion of the nanoparticles, to aluminum (Al) atoms of the alumina portion of the nanoparticles, or any combination thereof. The functionalized nanoparticles are well suited for forming relatively stable suspensions in briny, acidic, and relatively higher-temperature environments. Accordingly, suspensions formed from these functionalized nanoparticles may inhibit nanoparticle aggregation and precipitation, providing substantially-stable suspensions at well above room temperature (e.g., at about 30° C. to about 90° C., the latter being relatively close to the boiling point of the suspending liquid) and in concentrated brine (e.g., seawater or other relatively-high salinity water). The suspensions may also exhibit relatively higher ionic strength. The suspensions may be conducive for use in enhanced oil recovery (EOR) processes, treatment of water in tailing ponds, control of fines in wellbore formation, chelation of metal cations, and high temperature drilling fluids, to name a few non-limiting examples.
As used herein, the terms “comprising,” “including,” “containing,” “characterized by,” and grammatical equivalents thereof are inclusive or open-ended terms that do not exclude additional, unrecited elements or method steps, but also include the more restrictive terms “consisting of” and “consisting essentially of” and grammatical equivalents thereof.
As used herein, the term “may” with respect to a material, structure, feature, or method act indicates that such is contemplated for use in implementation of an embodiment of the disclosure, and such term is used in preference to the more restrictive term “is” so as to avoid any implication that other compatible materials, structures, features and methods usable in combination therewith should or must be excluded.
As used herein, the singular forms following “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.
As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
As used herein, the term “about” used in reference to a given parameter is inclusive of the stated value and has the meaning dictated by the context (e.g., it includes the degree of error associated with measurement of the given parameter).
The illustrations presented herein are not actual views of any particular particle or suspension, but are merely idealized representations employed to describe example embodiments of the present disclosure. The following description provides specific details of embodiments of the present disclosure in order to provide a thorough description thereof. However, a person of ordinary skill in the art will understand that the embodiments of the disclosure may be practiced without employing many such specific details. Indeed, the embodiments of the disclosure may be practiced in conjunction with conventional techniques employed in the industry. In addition, only those process acts and structures necessary to understand the embodiments of the disclosure are described in detail below. Additional conventional acts and structures may be used. Also note, the drawings accompanying the application are for illustrative purposes only, and are not drawn to scale. Additionally, elements common between figures may have corresponding numerical designations.
The suspensions described herein include nanoparticles comprising alumina and silica. Such aluminosilica nanoparticles may be derived from silica nanoparticles.
The silica nanoparticles 102 may be suspended in a liquid 104. The liquid 104 may include an aqueous medium comprising water and at least one other component. For example, the liquid 104 may include a mixture of ethanol and water, one or more salts dissolved in water, etc. In some embodiments, the liquid 104 may be an aqueous brine, such as seawater. The liquid 104 may have dissolved divalent or other multivalent ions therein, such as Mg2+, Ca2+, Sr2+, Ba2+, Fe2+, Fe2+, Cu2+, CO32+, SO32+, SO42−, S2−, PO43−, etc. For example, the liquid may have at least about 10 parts per thousand (ppt) of dissolved salts, at least about 20 ppt of dissolved salts, or even at least about 30 ppt of dissolved salts. In certain embodiments, the liquid 104 may include an alcohol (e.g., glycol (e.g., ethylene glycol)) or one or more solvents, such as tetrahydrofuran, dimethylformamide, dimethyl sulfoxide, propylcarbonate, acetone, acetate, toluene, alcohol(s), ether(s), ester(s), etc., or combinations of any of the foregoing.
Hydroxyl (—OH) groups may be attracted, by van der Waals, to silicon (Si) atoms at the surfaces of the silica nanoparticles 102, forming silanol (Si—OH) functional groups on the surfaces of the silica nanoparticles 102.
The exposed surface of the silica nanoparticles 102 may be modified to substitute at least some silicon atoms with aluminum, forming aluminosilica nanoparticles 202, illustrated in
The aluminosilica nanoparticles 202 may be functionalized—to form functionalized nanoparticles 302 illustrated in
As discussed further below, an organosilicon functional group may include more than one bonding site that may chemically bond to the silica or alumina of an aluminosilica nanoparticle 202 (
Cross-linking between organosilicon functional groups and multiple nanoparticles may be substantially avoided. That is, the suspension may be substantially free of organosilicon functional groups bonded to multiple nanoparticles. To substantially avoid such multiple-nanoparticle cross-linking, the amount (e.g., concentration) of nanoparticles (e.g., silica nanoparticles 102 (
Functionalizing the nanoparticles (e.g., the aluminosilica nanoparticles 202 (
With reference to
Organosilicon Functional Groups FG of the Functionalized Nanoparticles:
The organosilicon functional group FG of the functionalized nanoparticle 302 may have a chemical structure of “Structure I,” as follows:
##STR00004##
wherein:
In embodiments in which Q represents an epoxide group or an aziridine group, the organosilicon functional group FG may be referred to herein as “non-hydrolyzed.” In embodiments in which Q represents the —CH(OH)CH2OH group, the —CH(OH)CH2NH2 group, the —CH(NH2)CH2OH group, or the —CH(NH2)CH2NH2 group, the organosilicon functional group may be referred to herein as “hydrolyzed.”
As an example implementing Structure I, in some embodiments one or more of the organosilicon functional group(s) FP of the functionalized nanoparticle(s) 302 includes either the epoxide group (non-hydrolyzed) or the aziridine group (non-hydrolyzed) and so has a non-hydrolyzed chemical structure of “Structure II,” as follows:
##STR00005##
As a more particular example, in some embodiments, Z represents the oxygen atom for at least some of the organosilicon function group(s), such that these organosilicon functional group(s) have a chemical structure of “Structure III,” as follows:
##STR00006##
In other embodiments, one or more of the oxygen (O) atoms shown in Structure III may be substituted with a nitrogen-including group (e.g., NH).
With reference to
In the functionalized nanoparticle 302, the chemical bond between the organosilicon functional group (FG) (e.g., with a chemical structure according to Structure I, e.g., Structure II, e.g., Structure III) and the silicon or aluminum atom(s) (Si/Al) of the nanoparticle NP (the aluminosilica nanoparticle 202 (
Without being bound to any particular theory, it appears that the connecting oxygen atom (—O—), of the intermediate alkoxy group, aids in the formation of a covalent bond to the silicon or aluminum (Si/Al) atoms at the surface of the aluminosilica nanoparticle 202 (
The organosilicon functional group FG may be hydrophilic, which may improve the suspension of the functionalized nanoparticles 302 in the liquid 104 (e.g., water, salt water, seawater, brine).
Each functionalized nanoparticle 302 may include one or more organosilicon functional groups FG bonded thereto. The degree of stability of the functionalized nanoparticles 302 may increase with an increasing number of bonded organosilicon functional groups FG.
The silicon (Si) atom(s) of the organosilicon functional group FG may include up to three available bonding sites (e.g., three bonding sites not bound to the organic chain of the organosilicon functional group, which three bonding sites correspond to the “X”s illustrated in the chemical structures herein and the illustrations of the drawings). For each functionalized nanoparticle 302, the nanoparticle NP may be chemically bonded, via an oxygen atom, at any one or more of the three bonding sites (e.g., at a first bonding site, as illustrated in
In the figures and chemical structures herein, “Y” represents a potential bonding site at which the silicon (Si) atom of the organosilicon functional group FG is not chemically bonded to the nanoparticle NP. Accordingly, as mentioned above, “Y” represents:
While
Functionalizing Compounds (FC):
The organosilicon functional groups FG are derived from functionalizing compounds “FC,” any of which may have a chemical structure according to “Structure IV,” as follows:
##STR00007##
For example, in some embodiments, the functionalizing compound(s) FC may be non-hydrolyzed, Z may represent oxygen, and Q may represent an epoxide group, such that one or more of the functionalizing compound(s) may have a chemical structure according to “Structure V,” as follows:
##STR00008##
In some embodiments in which the functionalizing compound(s) FC implement Structure V, Y may represent an alkoxy-bonded alky group, such that one or more of the functionalizing compound(s) may have a chemical structure according to “Structure VI,” as follows:
##STR00009##
In some embodiments in which the functionalizing compound(s) FC implement Structure VI, the alkyl group(s) (R) may represent methyl groups (—CH3), such that one or more of the functionalizing compound(s) may have the chemical structure according to “Structure VII,” as follows, such that the functionalizing compound(s) is(are) GLYMO (i.e., (3-glycidyloxypropyl)trimethoxysilane):
##STR00010##
Functionalizing compounds FC with Structures V, VI, and VII may be referred to herein as “non-hydrolyzed” functionalizing compounds.
In some embodiments, one or more of the oxygen (O) atoms—of the organic chain that is bound to the silicon (Si) of the functionalizing compound FC—may be substituted with a nitrogen group (e.g., NH). Accordingly, in some embodiments, one or more of the functionalizing compounds may have a chemical structure according to “Structure VIII” (a single nitrogen substitution such that the FC comprises an —N— linkage in the organic chain that includes the epoxide group), a chemical structure according to “Structure IX” (a single nitrogen substitution such that the FC comprises an —O— linkage in the organic chain that includes an aziridine group), or a chemical structure according to “Structure X” (a double nitrogen substitution such that the FC comprises an —N— linkage in the organic chain that includes an aziridine group), as follows:
##STR00011##
In some embodiments, one or more of the functionalizing compounds FC may be hydrolyzed and may or may not include a nitrogen substitution.
In some such embodiments, a hydrolyzed functionalizing compound FC, not including a nitrogen substitution, may have a chemical structure according to “Structure X,” as follows, wherein the Z of Structure IV represents an oxygen (O) atom, and the Q of Structure IV represents a —CH(OH)CH2OH group:
##STR00012##
In accordance with Structure XI, in some embodiments, Y represents an alkoxy-bonded alkyl group, such that the functionalizing compound(s) FC may have a chemical structure according to “Structure XII,” as follows:
##STR00013##
In accordance with Structures XI and XII, in some embodiments, the alkyl group (R) represents a methyl group (CH3), such that the functionalizing compound(s) FC may have a chemical structure according to “Structure XIII,” as follows, and so may be characterized as “hydrolyzed GLYMO”:
##STR00014##
In some embodiments in which the functionalizing compound(s) FC are hydrolyzed, one or more of the oxygen (O) atoms—of the organic chain that is bound to the silicon (Si) of the functionalizing compound FC—may be substituted with a nitrogen group (e.g., NH). Accordingly, in some embodiments, one or more of the functionalizing compounds may have a chemical structure according to:
##STR00015##
##STR00016##
##STR00017##
##STR00018##
##STR00019##
##STR00020##
##STR00021##
Each of the functionalizing compounds FC (of any of Structures IV through XX) may alternatively be referred to herein as “GLYMO” or “GLYMO-like” compounds, and the organosilicon functional group(s) derived therefrom may also be referred to herein as “GLYMO” or “GLYMO-like” groups.
The functionalizing compounds FC (of the Structures IV through XX) may be compounds commercially available or otherwise may be synthesized, using conventional methods, to exhibit the Structures IV through XX.
Functionalizing the Aluminosilica Nanoparticles:
To bond the organosilicon functional group FG, derived from the functionalizing compound FC, with the silicon or aluminum (Si/Al) atoms at the surfaces of the aluminosilica nanoparticles 202 (
Accordingly, upon functionalizing the aluminosilica nanoparticles 202 (
In embodiments in which the organosilicon functional group(s) FG of the functionalized nanoparticles 302 (
While
Once functionalized, the functionalized nanoparticles 302 (
In some embodiments, the liquid 104 may be aqueous (e.g., water, salt water, brine, seawater). In these embodiments, the functionalizing compounds FC used to functionalize the aluminosilica nanoparticles 202 (
In some embodiments, the liquid may be non-aqueous (e.g., glycol, tetrahydrofuran, dimethylformamide, dimethyl sulfoxide, propylcarbonate, acetone, acetate, toluene, alcohol, ether, ester, hydrocarbon, alkane, aromatic solvent, crude oil, and/or any combination of any of the foregoing). In these embodiments, the functionalizing compounds FC used to functionalize the aluminosilica nanoparticles 202 (
Suspensions of the functionalized nanoparticles 302 may exhibit increased stability compared to suspensions of non-functionalized nanoparticles (e.g., the aluminosilica nanoparticles 202 of
Furthermore, because the functionalized nanoparticles 302 have fewer Si—OH bonds (compared to the silica nanoparticles 102 of
It is also contemplated that the functionalized nanoparticles 302, which may have relatively bulky organosilicon functional groups, may prevent two more functionalized nanoparticles 302 from approaching one another closely enough to be permit cross-linking of multiple particles by a single multi-valent metal cation.
Without being bound by any particular theory, it appears that improved stability of the functionalized nanoparticles 302 in the liquid 104 may be associated with the neutralization of the overall charge of the core of the functionalized nanoparticles 302 (e.g., compared to silica nanoparticles 102 (
The presence of the functional groups FG may provide steric hindrance to further interactions, even if some of the functional groups FG become hydroxylated. Furthermore, functionalization of the functionalized nanoparticles 302 may decrease the number of silanol groups available for dehydration.
The suspension of the functionalized nanoparticles 302 may be used in a wide variety of applications. For example, the suspension may be injected into a subterranean well for enhanced oil recovery, clay stabilization, drilling fluids, fracturing fluids, etc., in the oil-and-gas industry. The suspension may also be used to form dyes and pigments, coatings, magnetic recording media, quantum dots, and semiconductors. In some embodiments, the suspension may be a biological fluid, such as blood or a component thereof.
Additional non-limiting example embodiments of the disclosure are described below.
Embodiment 1: A composition of matter, comprising: a liquid; and functionalized nanoparticles suspended in the liquid, at least some of the functionalized nanoparticles comprising nanoparticles of aluminosilica and having a chemical structure of:
##STR00022##
wherein: at least one of the X's represents —O— bonded to a silicon (Si) atom or an aluminum (Al) atom of the aluminosilica of at least one of the nanoparticles; each other of the X's represents: an additional —O— bonded to another silicon (Si) atom or another aluminum (Al) atom of the aluminosilica of at least one of the nanoparticles, an alkoxy group, an alkyl group, a hydroxyl group (OH), a hydrogen atom, or a halide; Z represents: an oxygen (O) atom, or an NH group; and Q represents: an epoxide group, an aziridine group, a —CH(OH)CH2OH group, a —CH(OH)CH2NH2 group, a —CH(NH2)CH2OH group, or a —CH(NH2)CH2NH2, group.
Embodiment 2: The composition of Embodiment 1, wherein the liquid is aqueous.
Embodiment 3: The composition of any one of Embodiments 1 and 2, wherein the liquid comprises salt.
Embodiment 4: The composition of any one of Embodiments 1 through 3, wherein at least one of the each other of the X's represents the halide.
Embodiment 5: The composition of Embodiment 1, wherein the liquid is non-aqueous; and at least one of the each other of the X's represents the halide.
Embodiment 6: The composition of any one of Embodiments 1 through 5, wherein the at least one of the X's represents the —O—bonded to the aluminum (Al) atom of the aluminosilica of the at least one of the nanoparticles.
Embodiment 7: The composition of any one of Embodiments 1 through 6, wherein at least one of the each other of the X's represents the additional —O— bonded to the another silicon (Si) atom or the another aluminum (Al) atom of the aluminosilica of the at least one of the nanoparticles.
Embodiment 8: The composition of any one of Embodiments 1 through 6, wherein: at least one of the each other of the X's represents the additional —O— bonded to the another silicon (Si) atom or the another aluminum (Al) atom; and the silicon (Si) atom or the aluminum (Al) atom represented by the at least one of the X's is of a same nanoparticle, of the at least one of the nanoparticles, as the another silicon (Si) atom or the another aluminum (Al) atom represented by the at least one other of the X's.
Embodiment 9: The composition of any one of Embodiments 1 through 8, wherein: the at least one of the X's represents the —O— bonded to the aluminum (Al) atom of the aluminosilica of the at least one of the nanoparticles; and at least one of the each other of the X's represents the additional —O— bonded to the another silicon (Si) atom of the aluminosilica of the at least one of the nanoparticles.
Embodiments 10: The composition of any one of Embodiments 1 through 9, wherein the at least some of the functionalized nanoparticles are hydrolyzed, wherein the Q represents:
Embodiment 11: The composition of any one of Embodiments 1 through 9, wherein: the at least one of the X's represents the —O—bonded to the aluminum (Al) atom of the aluminosilica of the at least one of the nanoparticles; and the at least some of the functionalized nanoparticles are non-hydrolyzed, wherein the Q represents: an epoxide group, or an aziridine group.
Embodiment 12: The composition of any one of Embodiment 1 through 9, wherein the Q represents the aziridine group.
Embodiment 13: The composition of any one of Embodiments 1 through 12, wherein the Z represents the NH group.
Embodiment 14: A method for forming a suspension of functionalized nanoparticles, the method comprising: functionalizing nanoparticles with an organosilicon functional group to form functionalized nanoparticles, the nanoparticles each comprising silica and alumina, the functionalized nanoparticles having a chemical structure of:
##STR00023##
wherein: at least one of the X's represents —O— bonded to a silicon (Si) atom or an aluminum (Al) atom of at least one of the nanoparticles; each other of the X's represents: an additional —O— bonded to another silicon (Si) atom or another aluminum (Al) atom of at least one of the nanoparticles, an alkoxy group, an alkyl group, a hydroxyl group (OH), a hydrogen atom, or a halide; Z represents: an oxygen (O) atom, or an NH group; and Q represents: an epoxide group, an aziridine group, a —CH(OH)CH2OH group, a —CH(OH)CH2NH2 group, a —CH(NH2)CH2OH group, or a —CH(NH2)CH2NH2, group; and forming a suspension of the functionalized nanoparticles in a liquid.
Embodiment 15: The method of Embodiment 14, wherein functionalizing the nanoparticles with the organosilicon functional group comprises: hydrolyzing GLYMO; and bonding the hydrolyzed GLYMO to the nanoparticles to form the functionalized nanoparticles, wherein Z represents the oxygen (O) atom and Q represents the —CH(OH)CH2OH group.
Embodiment 16: The method of Embodiment 14, wherein functionalizing the nanoparticles with the organosilicon functional group comprises: bonding GLYMO to the nanoparticles; and after the bonding, hydrolyzing the GLYMO to form the functionalized nanoparticles, wherein Z represents the oxygen (O) atom and Q represents the —CH(OH)CH2OH group.
Embodiment 17: The method of any one of Embodiments 14 through 16, further comprising, before the functionalizing, modifying an exposed surface of silica nanoparticles to form the nanoparticles comprising the silica and the alumina.
Embodiment 18: The method of Embodiment 17, wherein modifying the exposed surface of the silica nanoparticles comprises replacing a silanol group with Al—OH.
Embodiment 19: The method of any one of Embodiments 14 through 18, further comprising maintaining the suspension at a temperature of at least 30° C. for a time period of at least 30 days while maintaining at least 90% of the functionalized nanoparticles in the suspension.
Embodiment 20: A method of using a suspension, comprising: providing the composition of matter of any one of Embodiments 1 through 13; and injecting the composition of matter into a subterranean well.
While the present invention has been described herein with respect to certain illustrated embodiments, those of ordinary skill in the art will recognize and appreciate that it is not so limited. Rather, many additions, deletions, and modifications to the illustrated embodiments may be made without departing from the scope of the invention as claimed, including legal equivalents thereof. In addition, features from one embodiment may be combined with features of another embodiment while still being encompassed within the scope of the invention as contemplated by the inventors. Further, embodiments of the disclosure have utility with different and various processes and systems.
Mazyar, Oleg A., Suresh, Radhika
Patent | Priority | Assignee | Title |
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Mar 31 2022 | SURESH, RADHIKA | BAKER HUGHES OILFIELD OPERATIONS LLC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 059475 | /0172 | |
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